A word is a single direct meaningful element of speech which can be represented audibly or in writing.
Words are quite interesting because they represent our innermost thoughts and desire. Deeps feelings can be represented with words. Be it a secret, for good or for evil means.
In a relationship, there are two major senses involved which enable us express ourselves to keep the rhythm of romance flowing: The sound and the touch which can be interpreted as the use of soothing words and physical touch of a light kiss to intensify the deep feelings of romance and sex.